From patchwork Fri Mar 4 06:15:36 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Zhao X-Patchwork-Id: 63522 Delivered-To: patch@linaro.org Received: by 10.112.199.169 with SMTP id jl9csp292023lbc; Thu, 3 Mar 2016 22:19:27 -0800 (PST) X-Received: by 10.194.95.40 with SMTP id dh8mr7793536wjb.146.1457072349140; Thu, 03 Mar 2016 22:19:09 -0800 (PST) Return-Path: Received: from lists.xenproject.org (lists.xenproject.org. [192.237.175.120]) by mx.google.com with ESMTPS id b71si2261196wmd.46.2016.03.03.22.19.08 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 03 Mar 2016 22:19:09 -0800 (PST) Received-SPF: neutral (google.com: 192.237.175.120 is neither permitted nor denied by best guess record for domain of xen-devel-bounces@lists.xen.org) client-ip=192.237.175.120; Authentication-Results: mx.google.com; spf=neutral (google.com: 192.237.175.120 is neither permitted nor denied by best guess record for domain of xen-devel-bounces@lists.xen.org) smtp.mailfrom=xen-devel-bounces@lists.xen.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xen.org with esmtp (Exim 4.84) (envelope-from ) id 1abj32-0005Oo-Ta; Fri, 04 Mar 2016 06:17:12 +0000 Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xen.org with esmtp (Exim 4.84) (envelope-from ) id 1abj31-0005Ob-IW for xen-devel@lists.xen.org; Fri, 04 Mar 2016 06:17:11 +0000 Received: from [85.158.139.211] by server-17.bemta-5.messagelabs.com id 1E/07-04382-66829D65; Fri, 04 Mar 2016 06:17:10 +0000 X-Env-Sender: zhaoshenglong@huawei.com X-Msg-Ref: server-15.tower-206.messagelabs.com!1457072227!18366542!1 X-Originating-IP: [58.251.152.64] X-SpamReason: No, hits=0.0 required=7.0 tests= X-StarScan-Received: X-StarScan-Version: 8.11; banners=-,-,- X-VirusChecked: Checked Received: (qmail 3541 invoked from network); 4 Mar 2016 06:17:09 -0000 Received: from szxga01-in.huawei.com (HELO szxga01-in.huawei.com) (58.251.152.64) by server-15.tower-206.messagelabs.com with SMTP; 4 Mar 2016 06:17:09 -0000 Received: from 172.24.1.49 (EHLO szxeml428-hub.china.huawei.com) ([172.24.1.49]) by szxrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DFX12086; Fri, 04 Mar 2016 14:16:55 +0800 (CST) Received: from HGHY1Z002260041.china.huawei.com (10.177.16.142) by szxeml428-hub.china.huawei.com (10.82.67.183) with Microsoft SMTP Server id 14.3.235.1; Fri, 4 Mar 2016 14:16:26 +0800 From: Shannon Zhao To: Date: Fri, 4 Mar 2016 14:15:36 +0800 Message-ID: <1457072152-16128-7-git-send-email-zhaoshenglong@huawei.com> X-Mailer: git-send-email 1.9.0.msysgit.0 In-Reply-To: <1457072152-16128-1-git-send-email-zhaoshenglong@huawei.com> References: <1457072152-16128-1-git-send-email-zhaoshenglong@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.16.142] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020201.56D92858.006A, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 84d54e646d915c84d16d69d587216446 Cc: hangaohuai@huawei.com, stefano.stabellini@citrix.com, shannon.zhao@linaro.org, zhaoshenglong@huawei.com Subject: [Xen-devel] [PATCH v5 06/22] arm/acpi: Prepare STAO table for Dom0 X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" From: Shannon Zhao Create STAO table for Dom0. This table is used to tell Dom0 whether it should ignore UART defined in SPCR table or the ACPI namespace names. Look at below url for details: http://wiki.xenproject.org/mediawiki/images/0/02/Status-override-table.pdf Signed-off-by: Parth Dixit Signed-off-by: Shannon Zhao Reviewed-by: Stefano Stabellini --- xen/arch/arm/domain_build.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index ed257e0..b369f2e 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -1357,6 +1357,43 @@ static int prepare_dtb(struct domain *d, struct kernel_info *kinfo) } #ifdef CONFIG_ACPI +static int acpi_create_stao(struct domain *d, struct membank tbl_add[]) +{ + struct acpi_table_header *table = NULL; + struct acpi_table_stao *stao = NULL; + u32 table_size = sizeof(struct acpi_table_stao); + u32 offset = acpi_get_table_offset(tbl_add, TBL_STAO); + acpi_status status; + u8 *base_ptr, checksum; + + /* Copy OEM and ASL compiler fields from another table, use MADT */ + status = acpi_get_table(ACPI_SIG_MADT, 0, &table); + + if ( ACPI_FAILURE(status) ) + { + const char *msg = acpi_format_exception(status); + + printk("Failed to get MADT table, %s\n", msg); + return -EINVAL; + } + + base_ptr = d->arch.efi_acpi_table + offset; + ACPI_MEMCPY(base_ptr, table, sizeof(struct acpi_table_header)); + + stao = (struct acpi_table_stao *)base_ptr; + ACPI_MEMCPY(stao->header.signature, ACPI_SIG_STAO, 4); + stao->header.revision = 1; + stao->header.length = table_size; + stao->ignore_uart = 1; + checksum = acpi_tb_checksum(ACPI_CAST_PTR(u8, stao), table_size); + stao->header.checksum -= checksum; + + tbl_add[TBL_STAO].start = d->arch.efi_acpi_gpa + offset; + tbl_add[TBL_STAO].size = table_size; + + return 0; +} + static int acpi_create_madt(struct domain *d, struct membank tbl_add[]) { struct acpi_table_header *table = NULL; @@ -1512,6 +1549,10 @@ static int prepare_acpi(struct domain *d, struct kernel_info *kinfo) if ( rc != 0 ) return rc; + rc = acpi_create_stao(d, tbl_add); + if ( rc != 0 ) + return rc; + return 0; } #else